Manual trans fluid help

[johnasosajr]

Here goes,
I am replacing a clutch in a 2008 Chevy Aveo I am going to change the transmission fluid while I have the ****** out it calls for 75W 90 GL3 fear oil I can’t find it anywhere except the dealer for almost 30 dollars a quart can I use 75W 90 GL4?

 

[Ole Slewfoot]

Good chance that car takes an oil which meets GM standard or the synchro facings fail.
I think coast and castrol make it.

 

[kelpaso1]

I used to use GM Syncromesh fluids in my Jeeps. A lot thinner than gear oils and easier shifting in freezing cold weather.

 

[ADSR]

look it up...

https://www.amsoil.com/lookup/auto-and-light-truck/

 

[ex-x-fire]

Make one of these for filling those components. I made a couple for our shop at work but I used 3/8 id clear hose and it flows a lot faster then the set up in the video. I used a 3/8 metal line bent into a J to put in the hole. Real time/mess saver for sure.

 

[joe_pinehill1]

I would buy the GL from the dealer. Fluids are one item I find dealers dont mark up too much, and if you ask for a discount I usually get one. The different GLs have different additive packages.

 

[mbshop]

Look up alternatives like redline, etc.

 

[pop pop]

75W90 GL3 is not 75W90 GL4. Why would you even ask? GL3 is GL3.

 

[MikeF2316]

If you believe Wikipedia (and I do), then GL3 is an inactive spec, which is why you can't find it. GL4 is a higher spec, and GL4 oils meet GL3 specs. The same is not true for GL5 vs GL4.

https://en.wikipedia.org/wiki/Gear_oil

 

[skruft]

I have found that I had to do some research on these oils, to see for sure what was within spec., esp. when I had a Jeep that specified all different oils for the axles, manual trans, transfer case, etc.

 

[engineer2]

I used to use an enema bucket to fill transmissions overnite. Very hand if the trans is already installed or is an old 4 speed with a side fill plug.

 

[slip knot]

I use the garden sprayer like the video. except I go from the valve to 1/4 copper tubing bend a slow 90 in it. Will push a gallon of 90wt in @ 3minutes.